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EP-4556274-B1 - ELECTRIC WORK VEHICLE

EP4556274B1EP 4556274 B1EP4556274 B1EP 4556274B1EP-4556274-B1

Inventors

  • KIEKE, DAVID

Dates

Publication Date
20260513
Application Date
20241025

Claims (13)

  1. An electric work vehicle comprising: a rear housing (12); a motor (18) for driving a rear wheel (4L), the motor (18) for driving said rear wheel (4L) being supported by the rear housing (12); another motor (20) for driving another rear wheel (4R), said another motor (20) being supported by the rear housing (12); a motor (22) for driving an electric work vehicle component (500) other than a wheel, said motor (22) for driving said electric work vehicle component (500) being supported by the rear housing (12); and another motor (24) for driving another electric work vehicle component other than a wheel, said another motor (24) for driving said another electric work vehicle component being supported by the rear housing (12); wherein said motor (18) for driving said rear wheel (4L) is connected to a gearing (19) to drive said rear wheel (4L); said another motor (20) for driving said another rear wheel (4R) is connected to another gearing (21) to drive said another rear wheel (4R); said electric work vehicle component (500) includes a Power Take-Off (PTO); and said Power Take-Off includes a PTO input shaft (504); and wherein: an outermost portion of said gearing (19) is located inside of said motor for driving said rear wheel (4L) in a left-right direction of the vehicle; an outermost portion of said another gearing (21) is located inside of said another motor for driving said rear wheel (4L) in the left-right direction of the vehicle; at least a portion of said gearing (19) and at least a portion of said another gearing (21) are located above said motor (22) for driving said electric work vehicle component (500) in an up-down direction of the vehicle; said motor (22) for driving said electric work vehicle component (500) is supported by the rear housing at a position between the first motor and the second motor; and said PTO input shaft (504) extends between gears of the said gearing (19) and said another gearing (21), in the left-right direction of the electric work vehicle.
  2. The electric work vehicle according to claim 1, wherein said another electric work vehicle component includes a hydraulic system.
  3. The electric work vehicle according to claim 1 or 2, wherein an axis of said another motor (24) for driving said another electric work vehicle component extends in parallel or substantially in parallel with axes of the motors (18,20) for driving rear wheels (4L,4R).
  4. The electric work vehicle according to any of claims 1 to 3, wherein an axis of said motor (22) for driving said electric work vehicle component (500) extends perpendicular or substantially perpendicular to an axes of the motors (18,20) for driving rear wheels (4L,4R).
  5. The electric work vehicle according to any of claims 1 to 4, wherein an axis of said motor (22) for driving said electric work vehicle component (500) is lower than axes of the motors (18,20) for driving rear wheels (4L,4R) in an up-down direction of the electric work vehicle.
  6. The electric work vehicle according to any of claims 1 to 5, wherein an axis of said another motor (24) for driving said another electric work vehicle component is lower than axes of the motors (18,20) for driving rear wheels (4L,4R) in an up-down direction of the electric work vehicle.
  7. The electric work vehicle according to any of claims 1 to 6, wherein axes of the motors (18,20) for driving rear wheels (4L,4R) are collinear.
  8. The electric work vehicle according to any of claims 1 to 7, wherein said motor (22) for driving said electric work vehicle component (500) is larger than each of the motors (18,20) for driving rear wheels (4L,4R) and said another motor (24) for driving said another electric work vehicle component.
  9. The electric work vehicle according to any of claims 1 to 8, wherein said motor (18) for driving said rear wheel (4L) is connected to a gearing (19) to drive said rear wheel (4L); said another motor (20) for driving said another rear wheel (4R) is connected to another gearing (21) to drive said another rear wheel (4R); an outermost portion of said gearing (19) is located to an inside of said motor for driving said rear wheel (4L) in a left-right direction of the vehicle; and an outermost portion of said another gearing (21) is located to an inside of said another motor for driving said rear wheel (4L) in the left-right direction of the vehicle.
  10. The electric work vehicle according to claim 9, further comprising: a gear casing (1200) affixed to a portion of the rear housing (12); wherein a portion of the gearings (19) and a portion of said another gearing (21) are located within the gear casing (1200).
  11. The electric work vehicle according to claim 10, wherein a width of the gear casing (1200) in the left-right direction of the electric work vehicle is thinner than a width of the rear housing (12) in the left-right direction.
  12. The electric work vehicle according to claims 1 to 11, wherein said motor for driving said rear wheel (4L) is located on a left side of the rear housing (12); said another motor (20) for driving said another rear wheel (4R) is located on a right side of the rear housing (12); said motor (22) for driving said electric work vehicle component (500) is located on a front side of the rear housing (12); and said another motor (24) for driving said another electric work vehicle component is located on the left side of the rear housing (12).
  13. The electric work vehicle according to claim 12, wherein said motor (22) for driving said electric work vehicle component (500) is connected to the Power Take-Off via a Power Take-Off shaft which extends from the front side of the rear housing (12) through an opening in a rear side of the rear housing (12).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is directed to an electric work vehicle (EV) such as an electric tractor. 2. Description of the Related Art Electric work vehicles (EVs) are becoming more prevalent as the industry moves from internal combustion engines towards fully electrically powered motors running on battery systems. For example, DE 202021105282 U1 discloses an electric drive structure for a working machine. SUMMARY OF THE INVENTION Preferred embodiments of the present invention provide an electric work vehicle such as an EV tractor. An electric work vehicle according to the present invention is defined in claim 1. Additional embodiments are defined in the dependent claims. Said motor for driving said electric work vehicle component may be located closer to one of the motors for driving the rear wheels and farther from another one of the motors for driving the rear wheels. Said motor for driving said rear wheel is connected to a gearing to drive said rear wheel; said another motor for driving said another rear wheel is connected to another gearing to drive said another rear wheel;an outermost portion of said gearing is located to an inside of said motor for driving said rear wheel in a left-right direction of the vehicle; andan outermost portion of said another gearing is located to an inside of said another motor for driving said rear wheel in the left-right direction of the vehicle. The electric work vehicle may comprise a gear casing affixed to a portion of the rear housing; wherein a portion of the gearings and a portion of said another gearing are located within the gear casing. A width of the gear casing in the left-right direction of the vehicle may be thinner than a width of the rear housing in the left-right direction. The rear wheels may be connected to respective rear wheel hubs which are mounted to the gear casing. The gearings may each respectively include a plurality of interlinking gears and extend from the rear housing into the gear casing. Said motor for driving said rear wheel may be located on a left side of the rear housing; said another motor for driving said another rear wheel may be located on a right side of the rear housing; said motor for driving said electric work vehicle component may be located on a front side of the rear housing; andsaid another motor for driving said another electric work vehicle component may be located on the left side of the rear housing. The electric work vehicle comprise a motor for driving an electric work vehicle component other than a wheel, the motor for driving said electric work vehicle component being supported by the rear housing; and said motor for driving said electric work vehicle component may be connected to the Power Take-Off via a Power Take-Off shaft which extends from the front side of the rear housing through an opening in a rear side of the rear housing. The Power Take-Off shaft may be connected to said motor for driving said electric work vehicle component through at least one Power Take-Off gear. The Power Take-Off shaft may be located below an output shaft of the PTO in the up-down direction of the electric work vehicle. The above and other features, elements, steps, configurations, characteristics, and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1A shows a perspective left-front view of an electric work vehicle.Fig. 1B shows a perspective right-front view of an electric work vehicle.Fig. 1C shows a perspective left-rear view of an electric work vehicle.Fig. 1D shows a perspective right-rear view of an electric work vehicle.Fig. 1E shows a front view of an electric work vehicle.Fig. 1F shows a right side view of an electric work vehicle.Fig. 1G shows a left side view of an electric work vehicle.Fig. 1H shows a top view of an electric work vehicle.Fig. 1I shows a bottom view of an electric work vehicle.Fig. 1J shows a bottom view of an electric work vehicle in which certain elements have been removed for illustrative purposes.Fig. 2 shows a rear perspective view of an intermediate frame, a battery housing, a front frame, and a rear frame of an electric work vehicle.Fig. 3 shows a rear perspective view of a battery housing and a front frame of an electric work vehicle.Fig. 4 shows a front perspective view of a battery housing.Fig. 5A shows a left side view of a battery housing.Fig. 5B shows a right side view of a battery housing.Fig. 5C shows a left side view of an intermediate frame, a battery housing, a front frame, and a rear frame of an electric work vehicle.Fig. 5D shows a right side view of an intermediate frame, a battery housing, a front frame, and a rear frame of an electric work vehicle.Fig. 6 shows a top left perspective view of portions of a rear of a partially disassembled electric work vehic